| UNION SOCIETY OF CANTON, LIMITED | Public company limited by shares | Live |
| UNION HOLDINGS LIMITED | Private company limited by shares | Dissolved |
| UNION ESTATE & INVESTMENT CO. LTD -THE- | Private company limited by shares | Dissolved |
| UNION ENGINEERING CO. LTD. -THE- | Private company limited by shares | Dissolved |
| UNION TRADING COMPANY, LIMITED -THE- | Private company limited by shares | Dissolved |
| UNION PRINTING COMPANY, LIMITED | Private company limited by shares | Dissolved |
| UNION BANK OF CHINA LIMITED -THE- | Private company limited by shares | Dissolved |
| CHINESE SEAMEN'S UNION BANK, LIMITED -THE- | Private company limited by shares | Dissolved |
| UNION BANK, LIMITED | Private company limited by shares | Dissolved |
| UNION LEATHER ARTICLES COMPANY LIMITED | Private company limited by shares | Dissolved |
| OVERSEA UNION LIMITED | Private company limited by shares | Dissolved |
| UNION LIMITED | Private company limited by shares | Dissolved |
| UNION COMPANY, LIMITED | Private company limited by shares | Dissolved |
| UNION CYCLE MANUFACTURING CO., LTD -THE- | Private company limited by shares | Dissolved |
| UNION DISPENSARY LIMITED | Private company limited by shares | Dissolved |
| UNION HOTEL LIMITED | Private company limited by shares | Dissolved |
| PACIFIC UNION TRADING COMPANY LIMITED -THE- | Private company limited by shares | Dissolved |
| UNION BREWERY LIMITED | Public company limited by shares | Dissolved |
| UNION CERAMIC INDUSTRIES COMPANY LIMITED | Private company limited by shares | Dissolved |
| HONG KONG MUSICIANS UNION LIMITED -THE- | Company limited by guarantee | Dissolved |
| UNION INVESTMENT COMPANY LIMITED | Public company limited by shares | Dissolved |
| UNION GENERAL COMPANY, LIMITED | Private company limited by shares | Dissolved |
| UNION METAL WORKS, LIMITED | Private company limited by shares | Live |
| UNION MERCANTILE COMPANY (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| UNION STEAMSHIP COMPANY, LIMITED | Private company limited by shares | Dissolved |
| UNION CHURCH, HANKOW. | Company limited by guarantee | Dissolved |
| CHINA UNION TRADING COMPANY LIMITED | Private company limited by shares | Dissolved |
| MARITIME UNION ASSURANCE COMPANY LIMITED | Public company limited by shares | Dissolved |
| UNION ENTERPRISES, LIMITED | Private company limited by shares | Dissolved |
| CHINA UNION LINES (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| UNION SOUTH TRADING AND TRANSPORTATION COMPANY, LIMITED | Private company limited by shares | Dissolved |
| UNION INDUSTRIAL DEVELOPMENT CORPORATION LIMITED | Private company limited by shares | Dissolved |
| FAR EAST UNION TRADING COMPANY, LIMITED -THE- | Private company limited by shares | Dissolved |
| CHINA UNION (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| AUSTRALASIAN HONG KONG UNION TRADING COMPANY, LIMITED | Private company limited by shares | Dissolved |
| UNION BROTHERS LIMITED | Private company limited by shares | Dissolved |
| UNION HOUSE (KOWLOON) LIMITED | Private company limited by shares | Dissolved |
| CHINA UNION LINES (AGENCIES) LIMITED | Private company limited by shares | Dissolved |
| UNION EXPRESS COMPANY (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| UNION FILM ENTERPRISE, LIMITED -THE- | Private company limited by shares | Dissolved |
| PACIFIC UNION LINES, LIMITED | Private company limited by shares | Dissolved |
| UNION DISPENSARY (KOWLOON) (1954) LIMITED | Private company limited by shares | Dissolved |
| UNION DISPENSARY (WANCHAI) (1954) LIMITED | Private company limited by shares | Dissolved |
| UNION EGG CORPORATION LIMITED | Private company limited by shares | Live |
| UNION FORWARDING AGENCY LIMITED | Private company limited by shares | Dissolved |
| HONG KONG UNION COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION STAR COMPANY, LIMITED | Private company limited by shares | Live |
| UNION ENTERPRISES COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION HOSPITALS, LIMITED | Private company limited by shares | Dissolved |
| MALAYA UNION COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION ICE CREAM FACTORY LIMITED -THE- | Private company limited by shares | Dissolved |
| BEN UNION CORPORATION LIMITED | Private company limited by shares | Dissolved |
| UNION COTTON MILLS, LIMITED | Private company limited by shares | Dissolved |
| UNION CARBIDE ASIA LIMITED | Private company limited by shares | Live |
| UNION TEXTILE COMPANY, LIMITED | Private company limited by shares | Dissolved |
| UNION CARBIDE SERVICES EASTERN LIMITED | Private company limited by shares | Dissolved |
| UNION OVERSEAS MARINE TRANSPORTATION LIMITED | Private company limited by shares | Dissolved |
| UNIVERSAL UNION COMPANY, LIMITED | Private company limited by shares | Dissolved |
| UNION NAVIGATION CORPORATION, LIMITED | Private company limited by shares | Dissolved |
| CAPITAL UNION PLASTIC WORKS, LIMITED | Private company limited by shares | Dissolved |
| GRAND UNION COMPANY LIMITED | Private company limited by shares | Dissolved |
| INTERNATIONAL UNION ASSURANCE COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION ASIA ENGINEERING COMPANY, LIMITED | Private company limited by shares | Dissolved |
| SHANGHAI UNION TRADING COMPANY LIMITED -THE- | Private company limited by shares | Dissolved |
| INTERNATIONAL UNION (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| UNION ENTERPRISE COMPANY, LIMITED | Private company limited by shares | Dissolved |
| UNION TEA TRADING CORPORATION, LIMITED -THE- | Private company limited by shares | Dissolved |
| UNION CULTURAL ORGANIZATION LIMITED | Private company limited by shares | Live |
| UNION RESEARCH INSTITUTE, LIMITED | Private company limited by shares | Dissolved |
| UNION COMMERCIAL CORPORATION (HONG KONG) LIMITED | Private company limited by shares | Dissolved |
| UNION PACIFIC INDUSTRIAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| HONG KONG UNION EMBROIDERY COMPANY LIMITED | Private company limited by shares | Dissolved |
| SOUTH UNION CHEMICAL ENGINEERS, LIMITED | Private company limited by shares | Dissolved |
| UNION FINE FOODS COMPANY (H.K.) LIMITED | Private company limited by shares | Dissolved |
| UNION PRESS LIMITED | Private company limited by shares | Dissolved |
| UNION REFRIGERATION AND ENGINEERING CO. LIMITED | Private company limited by shares | Dissolved |
| UNION BEAUTY CORPORATION LIMITED | Private company limited by shares | Dissolved |
| UNION TRANSPORT COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION AGENCY SERVICE LIMITED | Private company limited by shares | Dissolved |
| UNION YARN PROCESSING LIMITED | Private company limited by shares | Dissolved |
| UNION CONTRACTORS LIMITED | Private company limited by shares | Live |
| UNION GODOWNS LIMITED | Private company limited by shares | Dissolved |
| UNION PROMOTIONS LIMITED | Private company limited by shares | Dissolved |
| HONG KONG COTTON UNION LIMITED -THE- | Private company limited by shares | Dissolved |
| UNION CORRUGATED PAPER PRODUCTS FACTORY LIMITED | Private company limited by shares | Dissolved |
| WORLD UNION SHIPPING LIMITED | Private company limited by shares | Dissolved |
| UNION HONG KONG & TSUEN WAN COMPANY, LIMITED | Private company limited by shares | Dissolved |
| GRAND UNION TRANSPORTATION COMPANY, LIMITED | Private company limited by shares | Dissolved |
| GRAND UNION TRADING COMPANY, LIMITED | Private company limited by shares | Live |
| HAPPY UNION LAND INVESTMENT COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION CASH REGISTER COMPANY LIMITED | Private company limited by shares | Live |
| EASTERN UNION (H.K.) LIMITED | Private company limited by shares | Dissolved |
| UNION CHEMICAL LIMITED | Private company limited by shares | Live |
| GREAT UNION COMPANY LIMITED | Private company limited by shares | Dissolved |
| UNION (LUEN HOP) REFRIGERATION COMPANY, LIMITED | Private company limited by shares | Live |
| GRAND UNION INSURANCE COMPANY LIMITED | Private company limited by shares | Dissolved |
| EAST UNION INDUSTRIAL COMPANY LIMITED | Private company limited by shares | Dissolved |
| EASTERN UNION MARINE CORPORATION LIMITED | Private company limited by shares | Dissolved |
| KOWLOON PRESERVED GINGER UNION, LIMITED -THE- | Private company limited by shares | Dissolved |
| UNION PRODUCTS MANUFACTURING COMPANY LIMITED | Private company limited by shares | Dissolved |